Locomotive arch-brick.



W. SWHTH.

LOCOMOTIVE ARCH BRICK.v

APPLICATION FILED JUNE 19, 1916.

Pa tented Oct. 24,1916.

2 SHEETS-SHEET I.

m: mwms PETERS cu wwrw-unm. WASHYNUTUN. nv c,

W. SlVHTHi LOCOMOTIVE ARCH BRICK.

APPLICATION FILED JUNE 19. 1916.

Patented Oct. 24, 1916.

2 SHEETS-SHEET 2.

mmm 11' mt Hm. HW Z i wwazzr zdollzam 6/22/0570 Parnr ornnon.

WILLIAM SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNIVERSAL ARCH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LOCOMOTIVE ARCH-BRICK.

eoaaaa.

Specification of Letters Patent.

Patented Oct. 24, rare.

Application filed June 19, 1916. Serial No. 104,506.

To all whom it may concern:

Be it known that I, WILLIAM SMITH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Locomotive Arch- Brick, of which the following is a specification.

The present invention relates to a brick used in locomotive fiI'6bOX6S for constituting an arch or baffle within said box; and relates more particularly to that type of brick of the set of bricks constituting the arch, which are known as the center bricks.

One object of the invention is to provide this center brick with a depending projection, which will be composed of a series of inclined faces so disposed as to divert the streams of flame from a straight line movement to an angled movement, causing said streams to collide with one another within channels, and thus increase the efiiciency of combustion and tend to consume smoke.

A further object of the invention is to so arrange the projections as to have them constitute channels running both ways of the under face of the baffles, which channels will be composed of a series of alternating restricted and enlarged portions.

The invention further consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings: Figure 1 is a vertical section of a locomotive fire-box, with the arch of the present invention applied thereto; Fig. 2, a bottom view of said arch positioned within'the fire-box; Fig. 3, a transverse section through the arch and support ing tubes; Fig. 1, an enlarged detail of one of the end bricks and a portion of the middle brick, also showing the supporting tubes; Fig. 5, an under face view of the center brick; Fig. 6, a side view of this brick; Fig. 7, an end view of said brick; and Fig. 8, a perspective of said brick.

In the art to which the present invention relates, there has been known a form of baffie consisting of a series of slabs of refractory material, which are grooved along opposite edges to fit over the water-tubes extending through the fire-box, the flames being diverted downward by these baffles so as to be returned to the hot bed of coals and combustion thus increased, as well as the consumption of smoke. In the present arch,

it is purposed, in addition to this downward deflecting movement, to split up the streams of flame as they travel across the under face of the arch, causing them to collide with one another, which, as is well known, causes a mixing of the gases and produces smoke consumption and more efficient combustion.

Referring now to the drawings, and particularly to Figs. 1 and 2, the arch is shown in conjunction with a locomotive fire-box, comprising an outer section 9 and an inner section 10, which are spaced apart from one another to produce a rear water leg 11, side water legs 12, and a top water chamber 13. The inner section 10 comprises an inner tube supporting wall 1 1, an outer wall 15, side walls 16, and a crown sheet 17; and the water legs are closed by means of a mud ring 18.

Mounted within the walls 14 and 15, and extending diagonally downward through the fire-box, are a plurality of water-tubes 19. The baffle of the present invention is mounted upon these tubes and consists of a series of refractory slabs, certain of which, 20, may be termed the center brick, and certain of which, 21, may be termed the end brick. The center bricks span the space between the tubes and consist of refractory bodies formed with grooves 22 along opposite edges, which grooves are struck upon a radius to conform with the curvature of the tubes 19.

Depending from the under face of each of the bricks 20 is a projection 23, which, as shown is of diamond shape. The shape of this projection produces a series of angled walls 24. It will be noted that the projection is spaced away from the edges of the brick. Now, by referring to Fig. 2, it will be apparent that when the bricks are assembled as there shown, there will be spaces or channels 25 formed between the bricks on one side and extending one way of the baffle, and spaces or channels 26 formed between the bricks on the other side thereof .and extending the other way of the batfie. Each of the channels, as will be understood, comprises a series of enlarged and restricted portions, alternating with one another.

Assuming now that the flames are traveling across the under face of the batlle in the direction of the arrows in Fig. 2, the streams of flames upon striking the angled projection on the under face of the bricks will be deflected, as per the arrows in Fig. 2, and sent in directions toward one another, whereby they willcollide in the narrow spaces of the channels. They will then pass into the adjacent enlarged space, to be re-- deflected together in the second restricted space, and so on. across the baffle. They will thus mix with one another, which, as is well known, improves combustion and aids in smoke consumption.

The side bricks 21 span thespace between the outer water-tubes and the sides of the fire-box. These bricks are not formed with the projections 23, since the projections on the center bricks only are suflicient, it is believed, to carry out the object of the present invention, although the side bricks may be formed with these projections if so desired.

A spacing brick 27 is used to space the arch bricks away from the tube supporting wall 14;, This form of brick, however, is well known in the art.

From the foregoing description of the center bricks, it will be apparent that a brick has been produced of aconfiguration which will tend to split or divide the streams of fire passing across the under face of the baffle so as to cause them to collide and mix,

I and this is brought about without any weakening of the brick itself, as would be true in case of pockets formed in the under face thereof. Also, no thin division or cross walls are employed, which would be liable to fracture or break in the process of handling the brick. The ease of installing or removing the brick is in no wise impeded by the use of the depending lug referred to.

I claim:

A locomotive arch, comprising a series of bricks grooved along opposite edges to rest upon water tubes, a depending flat and short projection from the under face of each brick, each of said projections being of diamond-shaped formation and arranged with a point thereon adjacent the front, rear, and side edges of said under face of said brick, and each of said points lying approximately at the center of the edge with which it is associated, the projections on said brick when a plurality of bricks are assembled dividing the under face of the baflle into a plurality of gas channels, and said sloping faces of the projections diverting the gases into said channels from opposite directions, whereby they are caused to collide and mix, substantially as described.

WILLIAM SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

